There are a lot of sideboard options available to you, but to run through a few I particularly like, I do think Dive Down gets a lot better in sideboarded games if you know your opponent will be dense on removal for Games 2 and 3, so whilst maindecking this card is unappealing I have enjoyed having access to the card in my 75
You can add counters to lands, such as Gemstone Mine, you can hit a creature with a -1/-1 counter and make this a minor proliferate, and more
We reviewed these and found them to be a pretty decent value
Francisco, Fowl Marauder Heres a black Pirate with partner to go along with the pair from Commander Legends
The story here is that you are accepting hunting missions, fighting and slaying increasingly epic monsters (known as Marks), until you are ready to battle the biggest and baddest monster of all: Yiazmat
The cards signature ability Off With Their Heads